Business Details
45 Years
experience
Trusted Replacement Windows & Doors in London, ON
Since 1981, Centennial Windows has been a family-owned and operated leader in manufacturing and installing high-quality, energy-efficient windows and doors across Ontario. With over 500,000 installations and 43 years of expertise, we pride ourselves on delivering end-to-end solutions that combine innovation, integrity, and exceptional customer service. Our ENERGY STAR-certified products, backed by a lifetime No Fine Print Warranty, reflect our commitment to sustainability and excellence.Recognized with awards such as the ENERGY STAR Manufacturer of the Year and a Better Business Bureau A+ rating, we prioritize in-house craftsmanship, expert installation, and community engagement. Our state-of-the-art Canadian facilities ensure every product meets rigorous Keystone certification standards, while our team of over 200 professionals guarantees personalized service and accountability from consultation to completion.
Services
Replacement Windows
Entry Doors
Patio Doors
Energy-Efficient Solutions
Custom Window Designs
Details
- Year established: 1981
Highlights and features
- We have 43 years of experience in custom window and door manufacturing and installation.
- Our products are ENERGY STAR and Keystone certified for energy efficiency and quality.
- We offer a lifetime No Fine Print Warranty covering both products and installation.
- Our factory-trained installers ensure precise, professional service with no subcontractors.
- We are a Canadian-owned company with a proven track record of 500,000+ installations.
Associations and certifications
- ENERGY STAR
- Keystone Certifications
- Better Business Bureau
Services
Replacement Windows
Our custom vinyl replacement windows enhance energy efficiency and aesthetics. ENERGY STAR certified with multiple styles, colors, and grill patterns, they reduce heating costs and improve home comfort. Backed by a lifetime warranty.
Entry Doors
Durable fibreglass and steel entry doors combine security with elegant design. Customizable options include decorative glass and 29 exterior colors. ENERGY STAR certified for energy savings and long-term performance.
Patio Doors
Energy-efficient patio doors offer seamless indoor-outdoor living. Available in sliding and garden styles, they feature robust construction, thermal insulation, and customizable finishes to match your home's aesthetic.
Energy-Efficient Solutions
ENERGY STAR and Keystone-certified windows and doors lower utility bills and carbon footprints. Our products meet rigorous Canadian climate standards, ensuring durability and optimal thermal performance for Ontario homeowners.
Custom Window Designs
Create unique architectural features with bay, bow, or large feature windows. Custom-manufactured to fit your home's specifications, these designs enhance natural light and add value with premium materials and craftsmanship.
People
George Warren
President and Owner
George Warren, recipient of the C.P. Loewen Award, has led Centennial Windows for over 43 years. His leadership has driven 500,000+ installations and earned industry recognition for innovation and integrity.
Questions
What rebates are available for window and door replacements?
We offer an Instant Manufacturer's Rebate of $400 per window/door. Combine with Ontario's Provincial Rebate for additional savings. Contact us for details.
Do you provide installation services?
Yes, expert installation by our factory-trained employees is included in all window and door purchases, ensuring proper fit and long-term performance.
Are your products energy-efficient?
All products are ENERGY STAR and Keystone certified, meeting Canadian standards for energy savings and durability in extreme climates.
What areas do you serve?
We serve Kingston, London, Orangeville, Windsor, Newmarket, and surrounding Ontario communities with in-home consultations and installations.
What warranty do you offer?
Our No Fine Print Warranty covers products and installation for life. It's fully transferable to new homeowners within 10 years of purchase.
Reviews (6)
Sue Tremblay
Jan 26, 2022
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We just had most of the windows replaced in our 1930’s home. Doug and Paco were excellent to work with. All of the work was completed in an efficient and professional manner. Everything was explained so well including the operation of the windows. We would not hesitate to recommend Centennial as well as Doug and Paco.
Garreth Kilbourne
Jan 15, 2022
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Scott & Ed are Very knowledgeable and Courteous. Their professionalism is really shown in their attention to detail. They did an excellent job installing some windows for me and I couldn't be happier with the end result. Will be requesting them again with the next project.
Sammie Verge-Stambolic
Jan 10, 2022
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They are awesome Ive had them do both our doors aand several of our windows, they always do a great job!!!! Mike and Eric were efficient, courteous and very professional. Appreciate the great work guys. Thank you!!!
Tom Payne
Dec 17, 2021
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We had our large front window replaced by Mike and Robbie. They did a great job on the install and cleaned up all the debris and it looked like they were never here. Also, Mike was in great dealing with my 5 yr old with the questions about the removal and install.
Samantha V.
Apr 07, 2021
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Mike Silva and Ed Veldman just completed the install of 10 windows and 2 doors :) We have been happy from day 1 when Andrew Levy came to quote us :) Even though there was some serious sticker shock we have no regrets and couldn't be happier with the final outcome! Mike and Ed were great to have around worked incredibly hard, were polite and courteous! If you have window or door needs I recommend this team of gentleman for the job :)
David H.
Mar 12, 2013
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I have requested this company stop calling my home at least a dozen times. They may provide a decent product & service however I am beyond frustrated by their continued pushy sales & continual phone calls. I recognize the need to perform outbound telemarketing (that doesn't mean I like it) however, when a consumer asks to be removed from the calling list REMOVE them & stop calling. To that end I am going to put a negative review online for every phone call we receive until the calls stop & we receive a written apology from the owner. Being an internet marketer I can use
